public void DrawSegment(System.Numerics.Vector2 start, System.Numerics.Vector2 end, Color color)
{
start = FSConvert.ToDisplayUnits(start);
end = FSConvert.ToDisplayUnits(end);
_primitiveBatch.AddVertex(start, color, PrimitiveType.LineList);
_primitiveBatch.AddVertex(end, color, PrimitiveType.LineList);
}
public void DrawSolidCircle(System.Numerics.Vector2 center, float radius, System.Numerics.Vector2 axis, Color color)
{
const double increment = Math.PI * 2.0 / CircleSegments;
double theta = 0.0;
Color colorFill = color * 0.5f;
System.Numerics.Vector2 v0 = center + radius * new System.Numerics.Vector2((float)Math.Cos(theta), (float)Math.Sin(theta));
FSConvert.ToDisplayUnits(ref v0, out v0);
theta += increment;
for (int i = 1; i < CircleSegments - 1; i++)
{
System.Numerics.Vector2 v1 = center + radius * new System.Numerics.Vector2((float)Math.Cos(theta), (float)Math.Sin(theta));
System.Numerics.Vector2 v2 = center + radius * new System.Numerics.Vector2((float)Math.Cos(theta + increment),
(float)Math.Sin(theta + increment));
_primitiveBatch.AddVertex(v0, colorFill, PrimitiveType.TriangleList);
_primitiveBatch.AddVertex(FSConvert.ToDisplayUnits(v1), colorFill, PrimitiveType.TriangleList);
_primitiveBatch.AddVertex(FSConvert.ToDisplayUnits(v2), colorFill, PrimitiveType.TriangleList);
theta += increment;
}
DrawCircle(center, radius, color);
DrawSegment(center, center + axis * radius, color);
}
public void DrawPolygon(Vector2[] vertices, int count, Color color, bool closed = true)
{
for (int i = 0; i < count - 1; i++)
{
_primitiveBatch.AddVertex(FSConvert.ToDisplayUnits(vertices[i]), color, PrimitiveType.LineList);
_primitiveBatch.AddVertex(FSConvert.ToDisplayUnits(vertices[i + 1]), color, PrimitiveType.LineList);
}
if (closed)
{
_primitiveBatch.AddVertex(FSConvert.ToDisplayUnits(vertices[count - 1]), color, PrimitiveType.LineList);
_primitiveBatch.AddVertex(FSConvert.ToDisplayUnits(vertices[0]), color, PrimitiveType.LineList);
}
}
public void DrawCircle(Vector2 center, float radius, Color color)
{
const double increment = Math.PI * 2.0 / CircleSegments;
double theta = 0.0;
for (int i = 0; i < CircleSegments; i++)
{
Vector2 v1 = center + radius * new Vector2((float)Math.Cos(theta), (float)Math.Sin(theta));
Vector2 v2 = center + radius * new Vector2((float)Math.Cos(theta + increment), (float)Math.Sin(theta + increment));
_primitiveBatch.AddVertex(FSConvert.ToDisplayUnits(v1), color, PrimitiveType.LineList);
_primitiveBatch.AddVertex(FSConvert.ToDisplayUnits(v2), color, PrimitiveType.LineList);
theta += increment;
}
}
public void DrawSolidPolygon(Vector2[] vertices, int count, Color color, bool outline = true)
{
if (count == 2)
{
DrawPolygon(vertices, count, color);
return;
}
var colorFill = color * (outline ? 0.5f : 1.0f);
for (int i = 1; i < count - 1; i++)
{
_primitiveBatch.AddVertex(FSConvert.ToDisplayUnits(vertices[0]), colorFill, PrimitiveType.TriangleList);
_primitiveBatch.AddVertex(FSConvert.ToDisplayUnits(vertices[i]), colorFill, PrimitiveType.TriangleList);
_primitiveBatch.AddVertex(FSConvert.ToDisplayUnits(vertices[i + 1]), colorFill, PrimitiveType.TriangleList);
}
if (outline)
{
DrawPolygon(vertices, count, color);
}
}